In some programming languages (C, C++, C#, Java), a variable specially marked to disable optimizations because its value may change between accesses even if it does not appear to be modified; primarily used in hardware access and in threading
in some programming languages (C, C++, C#, Java), a variable specially marked to disable optimizations because its value may change between accesses even if it does not appear to be modified; primarily used in hardware access and in threading (en)